Graphene and the universality of the quantum Hall effect
Paper i proceeding, 2013

The quantum Hall effect allows the standard for resistance to be defined in terms of the elementary charge and Planck's constant alone. The effect comprises the quantization of the Hall resistance in two-dimensional electron systems in rational fractions of RK=h/e2=25812.8074434(84) Ω (Mohr P. J. et al., Rev. Mod. Phys., 84 (2012) 1527), the resistance quantum. Despite 30 years of research into the quantum Hall effect, the level of precision necessary for metrology, a few parts per billion, has been achieved only in silicon and III-V heterostructure devices. In this lecture we show that graphene - a single layer of carbon atoms - beats these well-established semiconductor materials as the system of choice for the realisation of the quantum resistance standard. Here we shall briefly describe graphene technology, discuss the structure and electronic properties of graphene, including the unconventional quantum Hall effect and then present in detail the route, which led to the most precise quantum Hall resistance universality test ever performed. © Società Italiana di Fisica.


A.Y. Tzalenchuk

National Physical Laboratory

Tjbm Janssen

National Physical Laboratory

O. Kazakova

National Physical Laboratory

J. M. Williams

National Physical Laboratory

Sergey Kubatkin

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Samuel Lara Avila

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Kasper Moth-Poulsen

Chalmers, Kemi- och bioteknik, Polymerteknologi

R. Yakimova

Linköpings universitet

T. Bjornholm

Kobenhavns Universitet

N. E. Fletcher

BIPM Bureau International des Poids et Mesures

R. Goebel

BIPM Bureau International des Poids et Mesures

S. Kopylov

Lancaster University

V. I. Fal'ko

Lancaster University

Proceedings of the International School of Physics "Enrico Fermi"

0074784X (ISSN) 18798195 (eISSN)

Vol. 185 323-350


Elektroteknik och elektronik